What are primary standard substance and secondary standard substanse?
1
Expert's answer
2012-10-16T09:13:34-0400
Primary standards have some peculiar properties: They are nonsensitive to atmospheric oxygen They have known formula and molecular weight They are usually high molecular weight compounds They have a constant concentration /uniform composition for a long period of time They are powerful reactants
Secondary standards are: Influenced by atmosphere/environment Concentration change over time Usually powerful reactants Usually cheap & easy to use
Dear visitor Unfortunately, the statement of your question is a bit
confusing. What do you need to be done? Please, give us the details so
we could help you
monikasahu
04.09.13, 16:55
what about its defination?
Leave a comment
Thank you! Your comments have been successfully added. However, they need to be checked by the moderator before being published.
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
APPROVED BY CLIENTS
Finding a professional expert in "partial differential equations" in the advanced level is difficult.
You can find this expert in "Assignmentexpert.com" with confidence.
Exceptional experts! I appreciate your help. God bless you!
Comments
Dear visitor Unfortunately, the statement of your question is a bit confusing. What do you need to be done? Please, give us the details so we could help you
what about its defination?
Leave a comment